| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] two years [unc] | 122 |
|
| 2 | for [adj] years [unc] | 35 |
|
| 3 | for two [noun] [unc] | 18 |
|
| 4 | for two [noun pl] [unc] | 18 |
|
| 5 | for two year [unc] | 6 |
|
